ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,753, issued on Nov. 3, was assigned to IE ASSETS GMBH & Co. KG (Schorndorf, Germany).
"Fan wheel" was invented by Markus Lechler (Schorndorf, Germany) and Samuel Arnold (Schorndorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fan wheel with fan blades which are supported in a hub so as to be pivotable about the longitudinal fan blade axes, with the fan wheel including a drive flange which is connected to the hub via a limited free-wheeling structure, is provided with a planetary transmission arranged between the drive flange and the fan blades. A sun gear of the planetary transmission which is connected to the drive flange for rotation t...